# Problem: A gaseous mixture of O 2 and N2 contains 40.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585 mmHg ?

###### Problem Details

A gaseous mixture of O 2 and N2 contains 40.8 % nitrogen by mass. What is the partial pressure of oxygen in the mixture if the total pressure is 585 mmHg ?